If you downloaded this from an unknown source, run a scan using tools like Malwarebytes before opening it.
Files like this are often found on file-sharing sites or community forums. If this is a personal file you've discovered, it may be a specific clip from a larger collection or an episode of a niche web series.
Right-click the file and select "Properties" (Windows) or "Get Info" (Mac) to see the creation date and source.
If you are trying to of the video safely:
The naming convention (a title followed by a number in parentheses and a file extension) is typical for automated backups from cloud services like Google Photos or messaging apps. You can manage and organize such files using the Google Photos Help Center .
Occasionally, local game files or recordings use such numbering systems. Platforms like Steam allow users to capture and store gameplay clips in similar formats.